Apparatus for making lampblack.



No. 807,646. PATENTED DEC. 19, 1905.

G. WBGELIN.

APPARATUS FOR MAKING LAMPBLAC'K.

APPLICATION FILED AUG.19.1903.

UNITED STATES PATENT TTT CEQ APPARATUS FOR MAKING LAWIPBLACK.

Specification of Letters Patent.

Patented Dec. 19, 1905.

Application filedAug ust 19, 1903. Serial no, 170,025.

To cU/Z whom, it may concern.-

Be it known that I, GOTTFR ED WEGELIN, engineer, a subject of the Kingof Prussia, German Emperor, residing at Kalseheuren, in the Kingdom ofPrussia and German Empire, have invented certain new and usefulImprovements in Apparatus for Making Lampblack, of which the followingis a full, clear, and exact description.

The present invention relates to an. apparatus for the manufacture oflampblack, and is an improvement of the apparatus described in my UnitedStates Patent No. 688,215, dated December 3, 1901. In the apparatusdescribed in the said patent the pipe for conducting the hydrocarbonliquid to the vessel is likely to become unevenly heated on the severalplaces Within the combustion-chamber, and the result is that thedistillation becomes too intensive on the places subjected to thestrongest heat, on which places coke formation takes place and the pipebecomes choked.

The apparatus according to the present invention differs from that of myprior patent above referred to in that the pipes for heat ing the tarand the air for combustion are done away with. The air for thecombustion is introduced above the upper level of the liquid and meansare provided for stirring the liquid without moving the reservoir inwhich it is contained. The stirring of the hydrocarbon liquid isnecessary in order to continuously force the lower strata of the liquidto the surface, thus preventing that the radiant heat of the flame fromthe gases, which get mixed with air and burn to soot above the liquid,acts only on the upper strata of the liquid and cause coke formation totake place. In the apparatus forming the subject-matter of my priorpatent I effect the stirring of the liquid by forcing compressed air forcombustion through the mass; but I have found that it is more simple touse a mechanical stirrer arranged within the vessel, and by means ofsuch a stirrer I cause the li uid to continuously move within the vesselwithout necessitating movement of the vessel proper, which would requirea more complicated construction and a greater motive power.

In the accompanying drawing I have shown a vertical section through myimproved apparatus.

In the side walls of the vessel a is j ournaled a shaft 0, the journalsbeing made tight by means of stuffing-boxes b. The shaft is providedwith arms (Z, carrying stirrer-blades c.

The shaft 0 is rotated by any suitable means, such as a crankf or asmall electromotor, and the movement of the stirrer-blades causes thelower strata of the liquid to be continuously forced to the surface,where they are heated by the radiant heat of the distillation-gases,which are mixed with the air passing in at g. Thus it is possible toavoid a special heating plant for the vessel or a compression-drum forthe air or complicated devices for imparting movement to the vesselproper.

The tar is introduced into the vessel through I the medium of anysuitable means, such as a pipe h, leading from a tank (not shown)located at a higher level than the vessel.

Having described my invention, what I claim as new is- In an apparatusfor making lampblack, the combination of a stationaryhydrocarbonliquid-containing vessel open at the top and closed at thesides and at the bottom, a combustion-chamber communicating with the topof said vessel and provided with an airinlet, and a mechanical stirrerwithin the vessel; said stirrer being journaled in the side walls of thevessel, and having a part projecting outside of the Vessel.

In witness whereof I subscribe my signature in presence of twowitnesses.

GOTTFRIED VVEGELIN.

WVitnesses:

W. FRHRR. v. LYNGKER, CARL FR. SOHMITT.

